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yowasou/pngone.rb

Created September 8, 2024 08:10
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pngone.rb
#
# PNGファイルのメタデータを全部読み込んでメモ帳に表示
#
require 'chunky_png'
require 'securerandom'
tempdir = 'C:\SD\pnglog'
if (ARGV.count < 1)
puts "please set parameter for file"
exit
end
file = ARGV[0]
png = ChunkyPNG::Image.from_file(file)
metastr = ""
metadata = png.metadata
metadata.each do |key, value|
metastr = metastr + "#{key}: #{value}" + "\r\n"
end
txtfilename = SecureRandom.hex(10) # 10バイト（20文字）のランダムな16進数文字列を生成
extension = ".txt" # ファイルの拡張子を指定
txtfilename = txtfilename + extension
File.open(tempdir + "\\" + txtfilename,"w") do |txt|
txt.puts(metastr)
end
system("start notepad.exe #{tempdir + "\\" + txtfilename}")
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